
I would always advise visiting breeders before they have a litter. This way you can see how they keep their dogs question how the puppies are reared from birth onward.
CHOOSING THE BREEDER is almost more important than choosing the puppy, as once you have chosen the breed then a good breeder should have a puppy you should be happy with.
many of us with larger breeds will start having puppies outside at 4 - 5 weeks as they need the space to play, and with many would be unhappy cooped up in doors all day, but they still need to be in for a goodly amount of time taking part in canine and human family life (backdoor tends to be open).
I have a kennel right outside my kitchen which is used as a bedroom (night time only) for some of the dogs (thick coated breed preferring it cool) and puppies will use it as daytime play area/shelter once they are at the running around stage, with a run so that the adults can get some peace away from them.
The show and Agility kennel you mention may actually rear this way and the kenneling may be on rotation (splitting up in season bitches and males that don't get on etc), this may be better than crating dogs in rotation which many multidog owners end up doing if they have to split dogs up for any reason.